these 2 derivations will be built:
  /nix/store/lkdsqfiay04n8irkgy9r3y2i8gwa5xg8-nixos-test-driver-pgmq.drv
  /nix/store/h0nvc97kcvlab4iyh3phh7fsaphkcwlx-vm-test-run-pgmq.drv